public HTTP2SettingsRegistry(HTTP2SettingsManager parent, bool readOnly, bool treatItAsAlreadyChanged)
{
this._parent = parent;
this.values = new UInt32[HTTP2SettingsManager.SettingsCount];
this.IsReadOnly = readOnly;
if (!this.IsReadOnly)
{
this.changeFlags = new bool[HTTP2SettingsManager.SettingsCount];
}
// Set default values (https://httpwg.org/specs/rfc7540.html#iana-settings)
this.values[(UInt16)HTTP2Settings.HEADER_TABLE_SIZE] = 4096;
this.values[(UInt16)HTTP2Settings.ENABLE_PUSH] = 1;
this.values[(UInt16)HTTP2Settings.MAX_CONCURRENT_STREAMS] = 128;
this.values[(UInt16)HTTP2Settings.INITIAL_WINDOW_SIZE] = 65535;
this.values[(UInt16)HTTP2Settings.MAX_FRAME_SIZE] = 16384;
this.values[(UInt16)HTTP2Settings.MAX_HEADER_LIST_SIZE] = UInt32.MaxValue; // infinite
if (this.IsChanged = treatItAsAlreadyChanged)
{
this.changeFlags[(UInt16)HTTP2Settings.MAX_CONCURRENT_STREAMS] = true;
}
}
public HPACKEncoder(HTTP2SettingsManager registry)
{
this.settingsRegistry = registry;
// I'm unsure what settings (local or remote) we should use for these two tables!
this.requestTable = new HeaderTable(this.settingsRegistry.MySettings);
this.responseTable = new HeaderTable(this.settingsRegistry.RemoteSettings);
}
public HTTP2Stream(HTTP2SettingsManager registry, HPACKEncoder hpackEncoder, UInt32 id)
{
this.settings = registry;
this.encoder = hpackEncoder;
this.Id = id;
this.remoteWindow = this.settings.RemoteSettings[HTTP2Settings.INITIAL_WINDOW_SIZE];
this.settings.RemoteSettings.OnSettingChangedEvent += OnRemoteSettingChanged;
// Room for improvement: If INITIAL_WINDOW_SIZE is small (what we can consider a 'small' value?), threshold must be higher
this.windowUpdateThreshold = (uint)(this.remoteWindow / 2);
}
public HTTP2Handler(HTTPConnection conn)
{
this.Context = new LoggingContext(this);
this.conn = conn;
this.isRunning = true;
this.settings = new HTTP2SettingsManager(this);
// Put the first request to the queue
this.requestQueue.Enqueue(conn.CurrentRequest);
}
/// <summary>
/// Constructor to create a client stream.
/// </summary>
public HTTP2Stream(HTTP2SettingsManager registry, HPACKEncoder hpackEncoder)
: this(registry, hpackEncoder, (UInt32)Interlocked.Add(ref LastStreamId, 2))
{
}